Rotary engine.



. PATE-NTED DEC. 10, 1907.

B. P. AUGUSTINE.

ROTARY ENGINE APPLIOATION FILED DEO.17, 1906.

3 SHEETS-SHERT 23.0. wfiwmd No. 873,201 PATENTED DEC. 10, 1907.

B. F. AUGUSTINE. ROTARY ENGINE.

APPLIGATION FILED DEO.17,1906.

3 SHEETSSHEET 2.

I ve 7807: ///LIYZ 21 (asses Q g flrfi 9 37072914 PATENTED DEC. 10,1907.

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- provided in rear of the pistons with admisf through main andsupplemental exhaust ports in the casing.

wide the cylinder with a separate abutment of the'rotary core toproperlytime the cut- To all whom it may concmt:

steam or motive fluid exerts its pressure to i, I the supply passages toadmit the motive .30 l and the abutment and cut (iii the flui to act'made' and fitted'tc the c linder at small expense and can be rea ilyreplaced when claims. i

- of three sheets: Figure ,1 is a longitudinal Fig. 2 is aperspectiveview of the abutment W en s'iigarns BENJA IN F. AUGUSTINE,

v no'rhny- No. 873,201. Specification of Parana cemen- OF BUFFALO, NEWYORK.

Enema.

Letters Patent. Patented Dz-20:10, 1907.

Application filed December 17. 1906-. Serial No. 848,275.

Be it-known that I, BENJAMIN F.-A eUs- TINE, a citizen of the UnitedStates, residing l at Buffalo, in the county of Erie and State of NewYork, have invented a new and useful Improvement in Rotary Engines, ofwhich the following is a specification.

This invention relates'more particularly to improvements in the rotaryengine disclosed in U S. Letters Patent No. 810,601, granted to me Jan.23, 1906, and which, briefly stated, is constructed as follows: A rotarypiston carrier or core is arranged to rotate ina stationary casing whichcontacts at one side with the core to form an abutment. The-- pistons'or blades against which the sion ports which successively register withfiuidinto the cylinder. between the is'tons expansively. The fluidleavesthe cylinder The objects-of the'invention are to propiece or wear piecewhich can be accurately" worn; also to secure a better arrangement ofthe pistons or blades and counterbalancing weights; also 'toprovideautomatic cutoff means to cooperate with the admissionports off inaccordance with variations in load on the engine; and to otherwiseimprove rotary engines of the type mentioned in'the respects hereinafterdescribed and set forth-in the In the accompanying drawings, consistingsectional elevation. of an engine provided with theimprovement, in line11, Fig. 3.

or wear piece removed. Fig. 3 is a trans- Verse sectional elevation ofthe engine in hne i 3-3 Fig. '1. Fig.4'is a fragmentary 'hori zontalsection thereof, on a. reduced scale, in

line 44,- Fig. 3, showing'the steam ports 'and assages. Fig.5 is atransverse sectiona elevation thereof in line 55, Fig. 1,

showing the automatic cutoff mechamsm; Fig. 6 is a perspective viewofthepiston carrier or core removed, without the end lates and pistons. Fig.Z is 'adetail sectiona view of the cutoff ring andass'ociated parts,

77,Fig. 5. v I

Like-letters of reference refer to likeparts in the several figuresm a Arepresents-the stationarycylinderor casing;'---;B' the power shaft whichpasses through. the casing and is ,.journaled in suit- I able adjustablebearings b on the opposite "ends of the casing; C therotarypistoncarrier or. core which is fixed to the shaft to turn therewith and isarranged in the casing to contact at one side therewith, tvhereb isprovided an abutment for the motive fiui .to

act against in driving the engine; D the pistons or blades which arearranged in piston pockets or chambers d in the rotary core to move inand odt as the core rotates pand E the stationary camsor eccentricswhich are against which the ends of the pistons bear and by which theyare held in sliding contact with the inner surface of'the cylinder asthe core rotates.

The cylinder or casing may be'of'the construction described in saidpatent or of any .fixedtothe opposite ends of the casingand 3othersuitable construction, except instead of having an inner surfaceformed partly by-a portion of the body of the casing concentric.

with theaxis of the core, and partly by anaoutment block at one side ofthe cylinder and having an inner face eccentric. with the axis of thecore, the body of the casing has a cylindrical here or hole aextendi toend thereof concentric throng out with the axis-of the power shaft andcore, and a from end 1 separate hollow cylindrical abutment piece orwear-plate a is-provided having a cylindrical outer surface and acylindrical bore or inner surface eccentric to its-outer surface and totheiaxis of the rotary core The abutment pieceis fitted in thecylindricalbore ort'hole of the casing. and forms a lining or wear-piecetherefor. As the bore of the cylinder body and the inner and outersurfaces of' the abutment piece are all e linabutment piece fitted inthe casing with nicev drical,th ese surfaces can be turned an the Therotary core C, Figs. 1 and 6, has ens larged ends or flan es c which, inthe present "ment piece and the ends of the casing, against posite endsof'the cylinder around the power Qeach piston can between theother twopistons. The weights the Weights can be located farther from the engine,straddle the thick portion of the abutment pi ece and are surrounded byand l form a'running joint with the end flanges a} of the abutmentpiece, and circularplates c which are secured to the opposite ends ofthe core and close the ends of the piston'cham-. bersdf These .end latesare of larger diameter than the flanged ends of the core and extendbetween the end flanges of the abutwhich the end ,plates bear.

' As the inner surface of the abutment piece on which the pistons travelis cylindrical, the jeceentrics E have circular peripheries on which-theends of the pistons or blades bear. The eccentrics'are located, like thecams in said patent, in cavities in the ends of the core inside of thecore end plates, being bolted 0rsecured in any other suitable way to theop- Threelpistons or blades, instead of four, as in the patent, arepreferably employed, as thereby the counterbalancing weight F for sideof the axis of the core from such piston are connected to theirrespective pistons byr-ods or bolts f, Figs. 1 and 3, which pass throughthe power shaft, and nuts and the weights are'located incav'itie s f provided for them in the core. In this way more room is provided for themovements of both the pistons and the counter-weights and larger pistonsand weights'can be used and axis of the core where they will respondmore readily to the centrifugal force. They 1, and it has annularendflanges a sh aft forwardly,

be arranged at the opposite can also be more readily adjusted when thuslocated, their securing bolts and nuts being reached through holes inthe core which are o posite to thei bolts and are normally cosed byplugs f. The counterbalancing weight-s can be ad'usted to hold thepistons.

- on the abutment piece with just force enough 4 to prevent leakage pastthe the wear on the pistons and pistons, so that abutment piece isgreatly reduced. v

G represents the admission ports extending through the end flanges andplates of the core in rear of the pistons and adapted in the rotation ofthe core to register with the supply ports g in the ends 1 levers of thecylinder, which are or pipes g with a main steam or motive fluid supplypipe H con-I trolled, by a throttlevalve h;

I indicates the valve rings which are located-inannular recesses in theends of the cylinder opposite to the admission ports and are c or othermeans. The main exhaust port or port's K extr nd through the inner wallof the body of the cylinder, which is preferably hollow and communicatcsat its lower portionwith the exhaust pipe it. When a pair of admissionports G registers with the supply ports 9 the steam orother motive fluidwill pass through them into the cylinder in rear of the adjacent piston,and, acting between said piston and the abutment, will drive the piston,core and that. is, to the right in Fig. 3, as indicated by the arrowWhen the admission ports pass the supply ports the steam will be outofi' and will act expansively until the piston reaches the exhaust'portsK and escapes from the cylinder. This action is repeated for eachpiston. The arrangement of the ports and action of the engine aresubstantially the same as in said gin'e.

patented en-' addition 'w th automatic cut-oft means constructedastollows L, Figs-1', 5 and 7 repreheld against the end plates of thecore by adjusting screws The engine herein described is provided insents movable cutofi' rings arranged in an nular recesses 1n" the inner,sides of'the end plates of the core, against the core flanges c, andhaving ports or openings Z registerin with the adniissionports in saidflan es an end plates. Byturning' or shiftin t 1e cutoff rings slightlyabout their axes the admission ports and so produce an earlier or latercut oil of the steam admitted to the cylinder. In the construction show.governor levers M are arranged. between the ends pf the cylinder and endplates of the core in chambers m, Fig. 1', provided for the purpose inthe core end-plates. The levers are tulcrumed betweentheir-ends in anysuitable manner to the end plates, and one arm of each lever is weightedand the othe arms of the levers have pin and slot or other looseconnections with arms m projecting in. wardly from the cutoff ring intothe governor chambers through slots m in the portions of the end plates,separating the governor chambers from the recesses for the cut-oll'rings. The weighted arms of the governor arc preferably supplemented bysprings m Fig. 5, attached thereto and to suitable fixed partson thecore end plates. \Vhcn the engine is in operation, the position of thegovernor lovers will vary under the centrifugal action in accordancewith the pass and successively K speed of the engine in a well knownmanner and through their connections with the out their ports will moreor less restrict the effective size of' in a 'correspondin I thevalve'being he be placed in register witheither of t 20 5 passagesstamoffring will shift the latter and properly time the cut-off inaccordance with the con-- ditions of load;- Any othersuitable-autodescribed.

and exhaust ports leading from the cylinder at opposite sides of theabutment to the' chamber 0 of the reversing valve vP located in thehollow base of the cylinder. A cylin-* drical valve is shown arranged tooscillate ly shaped valve chan' ber, low and connecting at one end witha passage or pipe p leading from the main steam or fluid suppl'y pipeHand pro-- vided with a throttle valve 12. The reversingvalve has athrough port 12 ada ted to lo supand side grooves or 3 p adapted toconnect the supplementa ports N andN respectively with plemental. portsN N,

j discharge openings p 1) in the valve chamber indifferent positions ofthe valve. 1i. the

haust "port; By turning t until its stea m port p registers with t P Nig' f direction.

to reverse the engine, t

' reversing valve open;

position of the reversin' valve shown in Fig. 3, its steam port and t esupplemental port N are closed and its passage p connects thesupplementalport N with the discharge 3 opening 1), in which case saidport N 'serves as a supplemental exhaust port for clearing thecylinden-fof steam remaii'iing in advance of'the pistons after they-passthe main exe reversin valve.

e supplemental port N its passage p 'will connect the suppl'ementahportN to the discharge 0 ening "The steam or motive fluid will t on enterthe cylinder through the supplemental port N and exhaust through themainexhaust port K and other supplemental the engine in the oppositeWhen usin gthe' reversin valve is throttle va ve h of the main steamsupply valve will be closed and the valve p of'the' pipe 11 leading tothe Any suitable handle.

' Ior device 1Q, Fig. 3, can be'employ ed for turnwit movable pistonscarried by said core, means mg the reversing valve.

. claim as my invention: v 1. Thecombination of a casing having acylindrical bore, a hollow separate cylin: drical abutment'piece fittedinsaid cylindrical bore of the casing and having a cylin= drical boreeccentric to its outer surface and end flanges concentric with said'outersurface, a rotary core arranged in's'aid abutmecillt, 1808concentrically with the bore of 'sai casing and with one side in contactwith the thick side thereof and having end en- .largfments locatedwithiii and concentric said end flanges of the-abutment piece,

for hold ng said pistons sliding "contact, with the Inner surface ofsaid abutment piece,

located of the cylinder in the rotation ofthe and.means,,= foradmittingfluid to and exhausting V it from said casing, substantially asset forth.

'2. The combination of .a casing having cylindrical bore a, hollowseparate cylma l drical abutmentpiece fitted in'said 'cyIin N Nrepresent "supplemental admission drical bore of the casing andterminatingshort of the ends of said casing, said abut- I .ment piecehaving cylindrical end 'fianges,

and a cylindrical bore eccentric to its outer 1 1' surface, a rotarycore arranged in said abutcated within said end flanges oi" the abutmentpiece, and endplates secured to said core and projecting between the'endflanges casing, movable pistons carried by said core,

of said abutment piece and the ends of said;

means for holding said pistons in sliding contact with the lnnei'surface of said abutment piece, and means for admitting fluid to andexhaustin it from said casing, substantially as set forlili.

3. The combination of a casing, a rotary core therein, an odd number ofpistons carried by said-core and arranged to move radially toward andfrom the axis'oftli core, a counter-weight connected to each piston andat the opposite side of the axis of the core therefrom, saidcounter-weights being arranged between adjacent pistons, and meansforadmitting fluid to and exhausting it from thecasing, substantially asset forth.

4. The combination of a, casing, a rotary core therein having an oddnumber of piston chambers therein and weight chambers between said istonchambers, pistons ar-' ranged to slide in said piston chambers towardand from the a'xis'of the core, coun-' tor-weights arranged in saidweight chambers and eachconnected 'to a piston at the opposite side ofthe axis of the core therefrom, and means foradmitting fluid to andexhausting it from the casing, substantially as set forth. 5. Thecombination of a casing having an inlet port, a rotary core having anadmission port at its peripheral portion which asses sa d port in thecyhnder, a piston carried by sa d core, a cut-oil rin which-rotates withsaid core and-1s locate near the periphery thereof and has an opening toregister with 7 said adnnsslonport, and means located in a said casingwithin the space bounded by said cut-oll' ring for -shifting saidcut-off ring relative to said 'eore, substantially as set forth.

6. The combination of a casing having inlet orts-in its ends, a rotarycore wit and plates and register with said inlet'ports in the endspistons carried by said core,

core, 3 i .cut-oif r ngs &

and rotate with said core and have openings to register with saidadmission ports, and means located between the ends of said core and theends of the casing outside of said end plates and connected to saidcut-off rings for riedby said core, sated in annular cavities in theends ofsaid core and have openings to register with said shifting themrelative to said core, substantially as set forth.

7. The combination of a easing havinginlet ports in' its ends, a rotaryin its ends which pass through said end plates and register wlth saidinlet ports in the ends of the cylinder in the rotation oi the eore,pistons carried by said core, packing rings between the end plates ofsaid bore the ends of the casing opposite to said admission ports, cutoif rings arranged in annular cavities in the ends of said core insidere ister with said admission ports, and

.I ll can S core provided 1 with end plates and l1fi.V11'1" a(i1n1SS10Iiports .L ends of the caslng concentrically within said and locatedWithin said casing for-shifting.

ol said end plates and having openings to stantially as set forth;

4 8". The combination'ofacasing having inlet ports in its ends, a rotarycore having admission ports in its ends which pass said inlet ports theends of the cylinder, istons carent-ofl rings W 'ch are loadmissionports, and means locatedin chamhers between theyends of said core andthe cut-off rings .for shifting said cut-off rings relative to saidcore, substantially as set forth.

Witness my hand, this fifth day of December, 1906. I

p I BENJAMIN F. AUGUSTINE. Witnesses: i

C. W. PARKER,

O. B. HoRNBEoK.

